Function json_array_foreach

src/app/RackWidget.cpp:273–291

	size_t moduleIndex;
	json_t* moduleJ;
	json_array_foreach(modulesJ, moduleIndex, moduleJ) {
		// module
		json_t* idJ = json_object_get(moduleJ, "id");
		if (!idJ)
			continue;
		int64_t id = json_integer_value(idJ);
		// TODO Legacy v0.6?
		ModuleWidget* mw = getModule(id);
		if (!mw) {
			WARN("Cannot find ModuleWidget %lld", (long long) id);
			continue;
		}

		// pos
		math::Vec pos = mw->box.pos.minus(RACK_OFFSET);
		pos = pos.div(RACK_GRID_SIZE).round();
		json_t* posJ = json_pack("[i, i]", (int) pos.x, (int) pos.y);
		json_object_set_new(moduleJ, "pos", posJ);
	}

	// Calculate plug orders
	std::map<Widget*, int> plugOrders;